This post covers how to add a field to an enum. We will also cover how you can override an enum method.
Adding a field to an enum
In the following example, I created an enum type of Vehicles. Each vehicle in the Vehicles enum has a different color that is passed to it by calling the constructor. When calling getColor on one of the enum types will return the color that belongs to that vehicle.
Notice that the list of different types now ends with a
; instead of an empty line or
,. This is done because want to add more to
this enum than just the types. I also needed to add a field, a constructor, and a getter method.
Override an enum method
You can also override a method inside an enum. In the following example, BOAT overrides the getColor() method and adds text to the return value.
On line 6 the getColor method is overridden. When you call Vehicles.BOAT.getColor() it will return “My color is: Yellow” instead of “Yellow”.
In this post, we learned how to add fields to an enum and how to override a method inside an enum.